ci: re-enable depot runners (#25)

GitHub permissions have been fixed, so we can switch back to
depot-ubuntu-latest for the coder org. Forks continue to fall
back to ubuntu-latest.

Author: ThomasK33

.github/workflows/ci.yaml

@@ -19,10 +19,7 @@ concurrency:
 jobs:
   check:
     name: check
-    # Temporarily disabled Depot runner selection due connectivity issues.
-    # Re-enable once Depot runners can reliably connect to the repository.
-    # runs-on: ${{ github.repository_owner == 'coder' && 'depot-ubuntu-latest' || 'ubuntu-latest' }}
-    runs-on: ubuntu-latest
+    runs-on: ${{ github.repository_owner == 'coder' && 'depot-ubuntu-latest' || 'ubuntu-latest' }}
     permissions:
       contents: read
       actions: write